Valve opening assembly and drying equipment

Abstract

The embodiment of the utility model provides a valve opening assembly and drying equipment, and belongs to the technical field of batteries, and the valve opening assembly comprises a mounting seat, a valve opening device and a lifting device. The number of the valve opening devices is at least one, each valve opening device comprises a container and a press-opening assembly, the press-opening assemblies are located above the containers, and the upward upper sides of the press-opening assemblies can abut against the mounting bases. The lifting device is used for driving the container of the at least one valve opening device to ascend, so that the pressure opening assembly applies pressure to the normally-closed valves of the battery monomers in the container to open the normally-closed valves of the battery monomers. According to the embodiment of the invention, the container is driven to ascend by the lifting device mounted on the mounting seat, and the battery monomers placed in the container ascend along with the container, so that the press-open assembly can open the normally-closed valves of the battery monomers, and the space in the shell of the battery monomers can be heated and dried. The lifting device keeps the container in a lifting state, so that the normally-closed valve is kept open, and the battery monomers in the container can be continuously dried.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a valve opening assembly and drying equipment. Background Art

[0002] New energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also being increasingly used in areas such as energy storage.

[0003] Before injecting liquid into the battery cell, the space inside the shell of the battery cell needs to be dried. In the related art, it is difficult to dry the space inside the shell of the battery cell. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a valve opening assembly and a drying device to dry the space inside the outer shell of a battery cell.

[0005] This application is implemented through the following technical solutions.

[0006] A first aspect of an embodiment of the present application provides a valve opening assembly for drying a battery cell, the valve opening assembly comprising:

[0007] Mounting seat;

[0008] A valve opening device, the number of which is at least one, the valve opening device comprising a container and a press-opening assembly, the press-opening assembly being located above the container, and the upper side of the press-opening assembly facing upwards being able to abut against the mounting seat;

[0009] The lifting device is used to drive at least one container of the valve opening device to rise, so that the pressure-opening assembly applies pressure to the normally closed valve of the battery cell in the container to open the normally closed valve of the battery cell.

[0010] In the embodiment of the present application, the container is driven to rise by the lifting device installed on the mounting seat, and the battery cell placed in the container rises with the container. When the normally closed valve of the battery cell contacts the press-open assembly above the container, the battery cell applies a corresponding force to the press-open assembly. Since the upward side of the press-open assembly abuts against the mounting seat, the mounting seat will apply a corresponding reaction force to the press-open assembly, so that the press-open assembly applies pressure to the normally closed valve of the battery cell and opens the normally closed valve. The space inside and outside the shell of the battery cell is connected through the opened normally closed valve, so that the space inside the shell of the battery cell can be heated and dried. The lifting device keeps the container lifted, and the press-open assembly will continue to apply force to the normally closed valve, so that the normally closed valve remains open, so as to continue to dry the battery cell in the container.

[0011] In one embodiment, there are multiple valve opening devices, which are arranged in sequence in the up and down directions. The lifting device is used to drive the container of at least one valve opening device to rise, thereby driving all the containers to rise, so that the normally closed valves of the battery cells in the multiple valve opening devices are all opened.

[0012] In the embodiment of the present application, multiple valve opening devices arranged in the up and down directions are beneficial to improving the space utilization of the heating furnace.

[0013] In one embodiment, the valve opening assembly also includes a lifting member, and the lifting member is correspondingly arranged between the containers of two adjacent valve opening devices, and the lifting member is connected to the corresponding two containers located at the lower container, and the lifting member can be moved upward to abut against the corresponding two containers located at the upper container, and the lifting member can be lowered to be arranged with a spacing with the corresponding two containers located at the upper container. Among all the valve opening devices, the container of the valve opening device with the lowest position is the target container, and the lifting device is drivingly connected to the target container to drive the target container to rise and fall.

[0014] In the embodiment of the present application, when the lifting device descends, the containers of each valve opening device descend accordingly, and the top lifting member is arranged at intervals from the container above. In the process of some containers among the multiple containers arranged in the up and down directions moving into or out of the mounting seat, the possibility of interference between two adjacent containers can be reduced.

[0015] In one embodiment, the mounting seat has a supporting portion, the number of the supporting portions is multiple, and the multiple supporting portions are arranged in the up and down direction, and the pressing assembly includes:

[0016] A pressure-applying body, located above the corresponding container;

[0017] A guide shaft connected to a side of the pressure-applying body away from the corresponding container, and the guide shaft is passed through the corresponding support portion;

[0018] The elastic member is located between the pressure-applying body and the corresponding supporting portion.

[0019] In the embodiment of the present application, the force applied by the pressure-applying body to the normally closed valve of the battery cell is gradually increased through the buffering of the elastic member, which is beneficial to protecting the normally closed valve of the battery cell and reducing the possibility of damage to the normally closed valve.

[0020] In one embodiment, the support portion is correspondingly arranged between the containers of two adjacent valve opening devices, and the support portion is used to support the container of the valve opening device located above the support portion in the two adjacent valve opening devices. The valve opening assembly also includes a lifting member, and the lifting member is correspondingly arranged between the containers of the two adjacent valve opening devices. The lifting member is connected to the container located below the corresponding two containers, and the lifting member is a push rod, which is passed through the corresponding support portion so that the push rod can pass through the corresponding support portion to lift the container placed on the support portion.

[0021] In the embodiment of the present application, the push rod is inserted through the support part that provides a reaction force to the elastic member, so that the push rod can contact the container above the corresponding support part to lift the container above the support part. The push rod is lifted and lowered under the drive of the corresponding connected container. Since the push rod is inserted through the corresponding support part, the support part can constrain the movement trajectory of the corresponding push rod during the lifting and lowering process of the corresponding push rod, which is conducive to the smooth lifting and lowering of the push rod.

[0022] In one embodiment, the lifting device comprises:

[0023] A base assembly is arranged below the mounting base;

[0024] A cam assembly, rotatably connected to the base assembly;

[0025] A bearing assembly, in contact with the cam assembly, the bearing assembly being used to bear at least one container of the valve opening device;

[0026] A driver is drivingly connected to the cam assembly to drive the cam assembly to rotate.

[0027] In the embodiment of the present application, the driver drives the cam assembly to rotate, and the cam assembly can lift or lower the supporting assembly during the rotation, thereby correspondingly driving the container carried on the supporting assembly to rise and fall, thereby realizing the opening or closing of the normally closed valve of the battery cell.

[0028] In one embodiment, the bearing assembly includes:

[0029] A carrying body, located above the cam assembly, the carrying body is in contact with the cam assembly, and the carrying body is used to carry at least one container of the valve opening device;

[0030] A guide shaft is connected below the bearing body, and the guide shaft is movably arranged through the base assembly.

[0031] In the embodiment of the present application, the carrying body is lifted or lowered by rotating the cam assembly, and the guide shaft moves with the carrying body. The moving direction of the guide shaft is guided by the base, so that the guide shaft and the carrying body can basically move in the up and down directions to achieve lifting and lowering.

[0032] In one embodiment, the press-open component has a plurality of first air permeable grooves arranged at intervals and a plurality of second air permeable grooves arranged at intervals on a side facing the corresponding container, and the first air permeable grooves and the second air permeable grooves are arranged crosswise.

[0033] In the embodiment of the present application, the space inside the battery cell shell is connected to the space outside the battery cell shell through the opened normally closed valve, the first ventilation groove and the second ventilation groove, so that the space inside the battery cell shell can be heated, dried and vacuumed.

[0034] In one embodiment, the press-open component is mounted on the mounting seat to limit the lowest downward position of the press-open component; and / or the valve opening assembly further includes a roller mounted below the mounting seat.

[0035] In the embodiment of the present application, the press-open assembly is mounted on the mounting seat, and the mounting seat can limit the lowest position of the press-open assembly to prevent the press-open assembly from falling off the mounting seat, which is conducive to better arrangement of the press-open assembly. The mounting seat with rollers can be used as a trolley, which is conducive to more conveniently moving the entire valve opening assembly into or out of the heating furnace.

[0036] A second aspect of an embodiment of the present application provides a drying device, comprising:

[0037] Any of the above valve opening assemblies;

[0038] The heating furnace has a working chamber for heating, and the valve opening assembly can be located in the working chamber.

[0039] In the embodiment of the present application, the battery cells placed on the valve opening assembly in the working chamber are heated and dried by a heating furnace.

[0040] In one embodiment, the heating furnace further has a negative pressure interface communicating with the working chamber.

[0041] In the embodiment of the present application, the working chamber is sucked into a vacuum or the vacuum is broken through the negative pressure interface.

[0042] Utility model effect:

[0043] In the embodiment of the present application, the lifting device installed on the mounting seat drives the container to rise, and the battery cell placed in the container rises with the container. When the normally closed valve of the battery cell contacts the press-open assembly above the container, the battery cell applies a corresponding force to the press-open assembly. Since the upward side of the press-open assembly abuts against the mounting seat, the mounting seat will apply a corresponding reaction force to the press-open assembly, so that the press-open assembly applies pressure to the normally closed valve of the battery cell to open the normally closed valve. The space inside and outside the shell of the battery cell is connected through the opened normally closed valve, so that the space inside the shell of the battery cell can be heated and dried. The lifting device keeps the container lifted, and the press-open assembly will continue to apply force to the normally closed valve, so that the normally closed valve remains open, so as to continue to dry the battery cell in the container. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0045] Figure 1 This is a schematic diagram of the structure of the drying equipment according to an embodiment of the present application;

[0046] Figure 2 It is an assembly diagram of the mounting seat, the valve opening device, the lifting member and the roller of the embodiment of the present application;

[0047] Figure 3 for Figure 2 A magnified view at position A;

[0048] Figure 4 A schematic diagram of a battery cell of an embodiment of the present application being placed in a corresponding container, wherein a normally closed valve is shown;

[0049] Figure 5 for Figure 4 B view in the figure;

[0050] Figure 6 This is an assembly diagram of the lifting device and the heating furnace of the embodiment of the present application, in which the base assembly is not shown;

[0051] Figure 7 It is an assembly diagram of the lifting device and the heating furnace of the embodiment of the present application, and the base assembly is shown in the figure;

[0052] Figure 8 This is a schematic diagram of the structure of the lifting device of an embodiment of the present application;

[0053] Fig. 9 This is a schematic diagram of the structure of the press-open assembly of an embodiment of the present application;

[0054] Fig.10 for Fig. 9 C-direction view in;

[0055] Fig.11 for Fig.10 Magnified view at position D in the figure.

[0056] Description of Reference Numerals

[0057] 100. Valve opening assembly; 1. Mounting seat; 11. Support part; 2. Lifting device; 21. Base assembly; 211. Sub-seat; 22. Cam assembly; 221. Cam body; 222. Rotating shaft; 23. Bearing assembly; 231. Bearing body; 232. Guide shaft; 24. Driver; 3. Valve opening device; 31. Container; 32. Pressing assembly; 321. Pressure-applying body; 322. Guide shaft; 323. Elastic member; 324. First air permeable groove; 325. Second air permeable groove; 4. Lifting member; 5. Roller; 200. Heating furnace; 201. Working chamber; 202. Negative pressure interface; 300. Battery cell; 301. Normally closed valve. DETAILED DESCRIPTION

[0058] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the embodiments of this application and any variations thereof are intended to cover non-exclusive inclusions.

[0060] In the description of the embodiments of the present application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0061] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0062] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0063] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0064] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and may be direct contact or contact through an intermediate medium layer. It may be contact with essentially no interaction force between the two contacting parties, or it may be contact with interaction force between the two contacting parties.

[0065] In the related art, the bare cells of the battery cell are wrapped in a relatively closed space by the shell of the battery cell. A normally closed valve is provided on the shell. By opening the normally closed valve, the inner and outer spaces of the shell of the battery cell can be connected, so as to dry the space inside the shell of the battery cell. Before injecting liquid into the battery cell, the battery cell needs to be placed in a heating furnace for drying. It is difficult to keep the normally closed valve in an open state during the heating process of the battery cell in the heating furnace, so it is difficult to dry the space inside the shell of the battery cell.

[0066] In the embodiment of the present application, the container for placing the battery cell is lifted by a lifting device so that the pressing assembly opens the normally closed valve of the battery cell and keeps it in an open state, thereby better drying the space in the outer shell of the battery cell.

[0067] The number of battery cells can be multiple, and the multiple battery cells can be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells are both connected in series and in parallel. Multiple battery cells can be directly connected in series, in parallel, or in a mixed connection to form a battery pack. Of course, multiple battery cells can first be connected in series, in parallel, or in a mixed connection to form a battery module, and multiple battery modules can then be connected in series, in parallel, or in a mixed connection to form a battery pack. The battery pack may also include other structures. For example, the battery pack may also include a busbar component for realizing electrical connection between multiple battery cells.

[0068] A battery cell is a basic unit that can realize the mutual conversion between chemical energy and electrical energy.

[0069] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0070] In the embodiment of the present application, the battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., but the embodiment of the present application is not limited to this.

[0071] Bare cells can be made by winding or stacking electrodes.

[0072] The pole piece includes a current collector and an active material disposed on at least one side surface of the current collector.

[0073] The current collector has an overall sheet-like structure and can be rolled up.

[0074] The current collector can be a metal foil or a composite current collector.

[0075] Exemplarily, the material of the metal foil may be stainless steel, copper, aluminum, nickel or titanium.

[0076] Exemplarily, the composite material is a combination of a metal material and a polymer matrix.

[0077] The present application embodiment provides a drying device, see Figure 1 The drying device includes a valve opening assembly 100 and a heating furnace 200. The heating furnace 200 has a working chamber 201 for heating, and the valve opening assembly 100 can be located in the working chamber 201.

[0078] Exemplarily, the valve opening assembly 100 is installed in a heating furnace 200 .

[0079] Exemplarily, the valve opening assembly 100 can be moved into or out of the heating furnace 200 .

[0080] In the embodiment of the present application, the battery cells 300 on the valve opening assembly 100 in the working chamber 201 are heated and dried by the heating furnace 200 .

[0081] In one embodiment, the heating furnace 200 further has a negative pressure interface 202 communicating with the working chamber 201 .

[0082] Exemplarily, the negative pressure interface 202 is connected to an external negative pressure source.

[0083] In the embodiment of the present application, the working chamber 201 of the heating furnace 200 can be sucked into a negative pressure through the negative pressure interface 202.

[0084] The valve opening assembly 100 of the present embodiment of the present application is shown in FIG. Figure 1 to Figure 3 ,as well as Figure 6-7 The valve opening assembly 100 is used to dry the battery cell 300. The valve opening assembly 100 includes a mounting seat 1, a lifting device 2 and a valve opening device 3. There is at least one valve opening device 3. The valve opening device 3 includes a container 31 and a press-opening assembly 32. The press-opening assembly 32 is located above the container 31. The upward side of the press-opening assembly 32 can abut against the mounting seat 1. The lifting device 2 is used to drive the container 31 of at least one valve opening device 3 to rise, so that the press-opening assembly 32 applies pressure to the normally closed valve 301 of the battery cell 300 in the container 31 to open the normally closed valve 301 of the battery cell 300.

[0085] It is understandable that the space in the container 31 where the battery cells 300 are arranged is connected to the working chamber 201 of the heating furnace 200 .

[0086] Exemplarily, the mounting base 1 is a frame structure.

[0087] The mounting seat 1 is used to mount other components of the valve opening assembly 100 , and the specific structural form of the mounting seat 1 is not limited.

[0088] The lifting device 2 is a structure that can be raised and / or lowered.

[0089] Exemplarily, the lifting device 2 is located below the mounting seat 1 .

[0090] The container 31 is used to accommodate the battery cell 300 .

[0091] The press-open assembly 32 opens the valve by applying pressure to the normally closed valve 301 .

[0092] The normally closed valve 301 of the battery cell 300 is opened, the inner and outer spaces of the outer shell of the battery cell 300 are connected, and the heating furnace 200 can heat and dry the space inside the shell of the battery cell 300 .

[0093] The normally closed valve 301 is disposed on the outer shell of the battery cell 300 . The normally closed valve 301 is in a closed state when not acted upon by an external force, and can be opened under the action of an external force.

[0094] Exemplarily, the normally closed valve 301 is a one-way valve.

[0095] In the embodiment of the present application, the container 31 is driven to rise by the lifting device 2 installed on the mounting seat 1, and the battery cell 300 placed in the container 31 rises with the container 31. When the normally closed valve 301 of the battery cell 300 contacts the press-open assembly 32 above the container 31, the battery cell 300 applies a corresponding force to the press-open assembly 32. Since the upper side of the press-open assembly 32 abuts against the mounting seat 1, the mounting seat 1 will apply a corresponding reaction force to the press-open assembly 32, so that the press-open assembly 32 applies pressure to the normally closed valve 301 of the battery cell 300 to open the normally closed valve 301, and the space inside and outside the shell of the battery cell 300 is connected through the opened normally closed valve 301, so that the space inside the shell of the battery cell 300 can be heated and dried. The lifting device 2 keeps the container 31 lifted, and the press-open assembly 32 will continue to apply a force to the normally closed valve 301, so that the normally closed valve 301 remains open, so as to continue to dry the battery cell 300 in the container 31.

[0096] It can be understood that when the heating furnace 200 has a negative pressure interface 202 connected to the working chamber 201, the working chamber 201 of the heating furnace 200 can be sucked into a vacuum by connecting to an external negative pressure source through the negative pressure interface 202. Since the normally closed valve 301 of the battery cell 300 in the container 31 in the working chamber 201 is opened, the space in the outer shell of the battery cell 300 is connected to the working chamber 201, and the space in the outer shell of the battery cell 300 is correspondingly sucked into a vacuum state. The heating furnace 200 heats the space in the outer shell of the battery cell 300. After drying is completed, the lifting device 2 drives the container 31 to descend, and the battery cell 300 that follows the container 31 to descend is separated from the pressing assembly 32, and the normally closed valve 301 closes the space inside the outer shell of the battery cell 300. After the normally closed valve 301 closes the space inside the outer shell of the battery cell 300, even if the working chamber 201 of the heating furnace 200 breaks the vacuum so that the air pressure in the working chamber 201 returns to normal pressure, the space inside the outer shell of the battery cell 300 can still remain dry and in a vacuum state, which is conducive to the subsequent injection of liquid into the space inside the outer shell of the battery cell 300.

[0097] In one embodiment, please refer to Figure 2 There are multiple valve opening devices 3, and the multiple valve opening devices 3 are arranged in sequence along the up and down direction. The lifting device 2 is used to drive the container 31 of at least one valve opening device 3 to rise and drive all containers 31 to rise, so that the normally closed valves 301 of the battery cells 300 in the multiple valve opening devices 3 are all opened.

[0098] In the embodiment of the present application, a plurality of valve opening devices 3 are arranged in the up-down direction, and the container 31 of each valve opening device 3 can accommodate a battery cell 300. The lifting device 2 is used to drive the container 31 of at least one valve opening device 3 to rise, thereby driving all containers 31 to rise. The pressing assembly 32 of each valve opening device 3 can open the normally closed valve 301 of the battery cell 300 in the corresponding container 31. The space of the mounting seat 1 in the up-down direction is fully utilized to arrange the valve opening devices 3 and the corresponding battery cells 300, and by lifting and lowering all containers 31, the normally closed valve 301 of the battery cell 300 in each container 31 can be opened. The plurality of valve opening devices 3 arranged in the up-down direction are conducive to improving the space utilization rate of the heating furnace 200.

[0099] It is understandable that the number of the valve opening device 3 is not limited. For example, the number of the valve opening device 3 can be one.

[0100] In one embodiment, please refer to Figure 2 and Figure 3 The valve opening assembly 100 also includes a lifting member 4. A lifting member 4 is correspondingly arranged between the containers 31 of two adjacent valve opening devices 3. The lifting member 4 is connected to the container 31 located at the bottom of the two corresponding containers 31. The lifting member 4 can move upward to abut against the container 31 located at the top of the two corresponding containers 31. The lifting member 4 can descend to be arranged at intervals with the container 31 located at the top of the two corresponding containers 31. Among all the valve opening devices 3, the container 31 of the lowest valve opening device 3 is the target container 31. The lifting device 2 is drivingly connected to the target container 31 to drive the target container 31 to rise and fall.

[0101] The lifting member 4 is connected to the corresponding container 31, and the lifting member 4 rises and falls along with the corresponding container 31. When the lifting member 4 rises and falls along with the corresponding container 31, the lifting member 4 can move closer to or farther from the upper container 31.

[0102] The containers 31 of two adjacent valve opening devices 3 are connected to each other via the lifting member 4 to transfer motion and load.

[0103] Exemplarily, the lifting device 2 is located below the target container 31 to drive the target container 31 to move up and down.

[0104] The container 31 of the valve opening device 3 at the lowest position is the target container 31 , that is, all containers 31 except the target container 31 are located above the target container 31 .

[0105] For example, see Figure 2 , three valve opening devices 3 are shown in the figure, and the three valve opening devices 3 correspond to three containers 31 . The lowest container 31 among the three containers 31 is the target container 31 , and the other two containers 31 among the three containers 31 are above the target container 31 .

[0106] See also Figure 2 and Figure 7 , the direction indicated by the arrow R1 in the figure is the up and down direction.

[0107] In the embodiment of the present application, the rise of the lower container 31 drives the corresponding lifting member 4 to rise, and the lifting member 4 following the rise of the corresponding connected container 31 gradually approaches the container 31 above the lifting member 4, so that the lifting member 4 can abut against the upper container 31 and lift the upper container 31. The lifting device 2 drives the target container 31 to rise and fall, and the multiple containers 31 arranged in the up-down direction are lifted from bottom to top in sequence accordingly, so that the corresponding pressing assembly 32 above the container 31 applies a force to the normally closed valve 301 of the battery cell 300 in the container 31, thereby opening the normally closed valve 301 of the battery cell 300 in each container 31. When the lifting device 2 descends, the container 31 of each valve opening device 3 descends accordingly, and the lifting member 4 is arranged at intervals from the upper container 31. In the process of some of the multiple containers 31 arranged in the up-down direction moving into or out of the mounting seat 1, the possibility of interference between two adjacent containers 31 can be reduced.

[0108] It is understandable that the arrangement of the lifting member 4 is not limited. For example, the lifting member 4 can be connected to the upper container 31 of the corresponding two containers 31, and the multiple containers 31 arranged in the vertical direction are lifted together.

[0109] In one embodiment, please refer to Figure 2 , Figure 3 and Fig. 9 The mounting seat 1 has a supporting portion 11, and the number of the supporting portions 11 is multiple, and the multiple supporting portions 11 are arranged in the up-down direction. The pressing assembly 32 includes a pressing body 321, a guide shaft 322 and an elastic member 323. The pressing body 321 is located above the corresponding container 31. The guide shaft 322 is connected to the side of the pressing body 321 away from the corresponding container 31, and the guide shaft 322 is penetrated by the corresponding supporting portion 11. The elastic member 323 is located between the pressing body 321 and the corresponding supporting portion 11.

[0110] Exemplarily, the elastic member 323 may be a spring.

[0111] Exemplarily, the pressure-applying body 321 is a pressure plate.

[0112] The guide shaft 322 passes through the corresponding support portion 11 , and the guide shaft 322 can move up and down relative to the support portion 11 .

[0113] In the embodiment of the present application, the elastic member 323 is located between the pressure-applying body 321 and the corresponding support portion 11. The elastic member 323 is supported by the support portion 11 to apply a reaction force to the elastic member 323. The elastic force of the elastic member 323 acts on the pressure-applying body 321 so that the pressure-applying body 321 presses against the normally closed valve 301 of the battery cell 300, thereby opening the normally closed valve 301 of the battery cell 300 in the corresponding container 31. The buffering of the elastic member 323 gradually increases the force applied by the pressure-applying body 321 to the normally closed valve 301 of the battery cell 300, which is conducive to protecting the normally closed valve 301 of the battery cell 300 and reducing the possibility of damage to the normally closed valve 301.

[0114] It is understood that the specific structure of the pressing assembly 32 is not limited. For example, the pressing assembly 32 may not be provided with the elastic member 323 , and the support portion 11 is in rigid contact with the pressing body 321 to apply a reaction force to the pressing body 321 , thereby opening the normally closed valve 301 of the battery cell 300 .

[0115] In one embodiment, please refer to Figure 2 and Figure 3 A support portion 11 is correspondingly provided between the containers 31 of two adjacent valve opening devices 3, and the support portion 11 is used to support the container 31 of the valve opening device 3 located above the support portion 11 in the two adjacent valve opening devices 3. The valve opening assembly 100 also includes a lifting member 4, and a lifting member 4 is correspondingly provided between the containers 31 of the two adjacent valve opening devices 3. The lifting member 4 is connected to the container 31 located below the corresponding two containers 31, and the lifting member 4 is a lifting rod, which is hollowly provided in the corresponding supporting portion 11, so that the lifting rod can pass through the corresponding supporting portion 11 to lift the container 31 placed on the supporting portion 11.

[0116] Exemplarily, in addition to the support portion 11 correspondingly disposed between the containers 31 of two adjacent valve opening devices 3 , a corresponding support portion 11 is disposed below the target container 31 to support the target container 31 .

[0117] For example, see Figure 2 , the supporting portion 11 is plate-shaped.

[0118] In the embodiment of the present application, the ejector rod is provided through the support portion 11 that provides a reaction force to the elastic member 323, so that the ejector rod can contact the container 31 above the corresponding support portion 11, thereby lifting the container 31 above the support portion 11. The ejector rod is raised and lowered under the drive of the corresponding connected container 31. Since the ejector rod is provided through the corresponding support portion 11, the support portion 11 can constrain the movement trajectory of the corresponding ejector rod during the lifting and lowering process, which is conducive to the relatively smooth lifting and lowering of the ejector rod.

[0119] It is understandable that the specific structure and arrangement of the lifting member 4 are not limited. For example, the lifting member 4 may be staggered with the support portion 11 , and the lifting member 4 may not pass through the support portion 11 .

[0120] In one embodiment, please refer to Figure 6 to Figure 8 The lifting device 2 includes a base assembly 21, a cam assembly 22 and a bearing assembly 23. The base assembly 21 is disposed below the mounting base 1. The cam assembly 22 is rotatably connected to the base assembly 21. The bearing assembly 23 is in contact with the cam assembly 22, and the bearing assembly 23 is used to carry at least one container 31 of the valve opening device 3. The driver 24 is drivingly connected to the cam assembly 22 to drive the cam assembly 22 to rotate.

[0121] Exemplarily, the base assembly 21 may be an integral unit.

[0122] For example, see Figure 6 to Figure 8 The base assembly 21 includes a plurality of sub-bases 211 that are arranged separately. The cam assembly 22 is rotatably connected to one of the sub-bases 211, and the bearing assembly 23 is installed on two sub-bases 211 that are arranged separately.

[0123] For example, see Figure 6 to Figure 8 The cam assembly 22 includes a cam body 221 and a rotating shaft 222. The cam body 221 is sleeved on the rotating shaft 222 to rotate with the rotating shaft 222, and the driver 24 drives the rotating shaft 222 to rotate.

[0124] In the embodiment of the present application, the cam assembly 22 is driven to rotate by the driver 24. The cam assembly 22 can lift or lower the supporting assembly 23 during the rotation, thereby correspondingly driving the container 31 supported on the supporting assembly 23 to rise and fall, thereby realizing the opening or closing of the normally closed valve 301 of the battery cell 300.

[0125] It is understandable that the specific structure of the lifting device 2 is not limited. For example, the lifting device 2 can be a lifting cylinder. For example, the lifting device 2 can be an electric push rod.

[0126] In one embodiment, please refer to Figure 6 to Figure 8 The bearing assembly 23 includes a bearing body 231 and a guide shaft 232. The bearing body 231 is located above the cam assembly 22, and the bearing body 231 contacts the cam assembly 22. The bearing body 231 is used to carry at least one container 31 of the valve opening device 3. The guide shaft 232 is connected to the bottom of the bearing body 231, and the guide shaft 232 is movably arranged in the base assembly 21.

[0127] For example, see Figure 6 to Figure 8 , the carrying body 231 is in a plate shape.

[0128] Exemplarily, the carrying body 231 is located below the target container 31 .

[0129] In the embodiment of the present application, the supporting body 231 is lifted or lowered by rotating the cam assembly 22, and the guide shaft 232 moves along with the supporting body 231. The moving direction of the guide shaft 232 is guided by the base, so that the guide shaft 232 and the supporting body 231 can basically move in the up and down directions to achieve lifting and lowering.

[0130] In one embodiment, please refer to Figures 9 to 11 The pressing component 32 has a plurality of first air permeable grooves 324 and a plurality of second air permeable grooves 325 arranged at intervals on one side facing the corresponding container 31, and the first air permeable grooves 324 and the second air permeable grooves 325 are arranged crosswise.

[0131] For example, see Figures 9 to 11 The first air permeable groove 324 and the second air permeable groove 325 are both formed on the pressure-applying body 321 .

[0132] In the implementation of the present application, multiple first air permeable grooves 324 and multiple second air permeable grooves 325 are cross-arranged so that the first air permeable grooves 324 and the second air permeable grooves 325 have multiple intersection positions, and the pressing assembly 32 presses the normally closed valve 301 of the battery cell 300 at the intersection position of the first air permeable grooves 324 and the second air permeable grooves 325 to open the normally closed valve 301, and the space inside the outer shell of the battery cell 300 is connected with the space outside the outer shell of the battery cell 300 through the opened normally closed valve 301, the first air permeable grooves 324 and the second air permeable grooves 325, so that the space inside the outer shell of the battery cell 300 can be heated, dried and vacuumed.

[0133] It is understandable that the specific structure of the pressing component 32 connecting the inner and outer spaces of the shell of the battery cell 300 is not limited. Exemplarily, the pressing component 32 has a corresponding boss on the side facing the corresponding container 31, and the normally closed valve 301 of the battery cell 300 is pressed open by the boss, but the boss should not be too large, and the boss cannot block the valve port after pressing the normally closed valve 301 open.

[0134] In one embodiment, please refer to Figure 2 The pressing assembly 32 is installed on the mounting seat 1 to limit the lowest position of the pressing assembly 32.

[0135] For example, see Figure 2 The pressing assembly 32 is movably mounted on the mounting base 1 , and the pressing assembly 32 can rise or fall a certain distance relative to the mounting base 1 .

[0136] In the embodiment of the present application, the press-open assembly 32 is installed on the mounting seat 1, and the mounting seat 1 can limit the lowest position of the press-open assembly 32, and the press-open assembly 32 will not fall off the mounting seat 1, which is conducive to better arrangement of the press-open assembly 32.

[0137] In one embodiment, please refer to Figure 2 The valve opening assembly 100 also includes a roller 5 installed below the mounting seat 1.

[0138] In the embodiment of the present application, the mounting base 1 equipped with the roller 5 can be used as a trolley, which is conducive to moving the entire valve opening assembly 100 into or out of the heating furnace 200 more conveniently.

[0139] It is understandable that the mounting base 1 is not limited to the heating furnace 200. For example, the mounting base 1 may not have a heating function, and the mounting base 1 is a support structure that provides a reaction force to the press-open assembly 32, and the valve opening assembly 100 can be placed in the heating furnace 200 as a whole to dry the battery cell 300.

[0140] Exemplarily, the lifting device 2 can drive all containers 31 to rise together.

[0141] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way.

Claims

1. A valve opening assembly, characterized in that: Used for drying battery cells, the valve opening assembly comprises: Mounting seat; A valve opening device, the number of which is at least one, the valve opening device comprising a container and a press-opening assembly, the press-opening assembly being located above the container, and the upper side of the press-opening assembly facing upwards being able to abut against the mounting seat; The lifting device is used to drive at least one container of the valve opening device to rise, so that the pressure-opening assembly applies pressure to the normally closed valve of the battery cell in the container to open the normally closed valve of the battery cell.

2. The valve opening assembly according to claim 1, characterized in that: There are multiple valve opening devices, which are arranged in sequence in the up and down directions. The lifting device is used to drive the container of at least one valve opening device to rise, thereby driving all the containers to rise, so that the normally closed valves of the battery cells in the multiple valve opening devices are all opened.

3. The valve opening assembly according to claim 2, characterized in that: The valve opening assembly also includes a lifting member, which is correspondingly arranged between the containers of two adjacent valve opening devices, and is connected to the corresponding container located at the lower position of the two containers. The lifting member can be moved upward to abut against the corresponding container located at the upper position of the two containers, and can be lowered to be arranged with a spacing from the corresponding container located at the upper position of the two containers. Among all the valve opening devices, the container of the lowest valve opening device is the target container, and the lifting device is drivingly connected to the target container to drive the target container to rise and fall.

4. The valve opening assembly according to claim 2, characterized in that: The mounting seat has a supporting portion, the number of the supporting portions is multiple, and the multiple supporting portions are arranged in the up and down direction, and the pressing assembly includes: A pressure-applying body, located above the corresponding container; A guide shaft connected to a side of the pressure-applying body away from the corresponding container, and the guide shaft is passed through the corresponding support portion; The elastic member is located between the pressure-applying body and the corresponding supporting portion.

5. The valve opening assembly according to claim 4, characterized in that: The supporting part is correspondingly arranged between the containers of two adjacent valve opening devices, and the supporting part is used to support the container of the valve opening device located above the supporting part in the two adjacent valve opening devices. The valve opening assembly also includes a lifting member, and the lifting member is correspondingly arranged between the containers of the two adjacent valve opening devices. The lifting member is connected to the container located below in the corresponding two containers, and the lifting member is a lifting rod, which is passed through the corresponding supporting part so that the lifting rod can pass through the corresponding supporting part to lift the container placed on the supporting part.

6. The valve opening assembly according to any one of claims 1 to 5, characterized in that: The lifting device comprises: A base assembly is arranged below the mounting base; A cam assembly, rotatably connected to the base assembly; A bearing assembly, in contact with the cam assembly, the bearing assembly being used to bear at least one container of the valve opening device; A driver is drivingly connected to the cam assembly to drive the cam assembly to rotate.

7. The valve opening assembly according to claim 6, characterized in that: The bearing assembly comprises: A carrying body, located above the cam assembly, the carrying body is in contact with the cam assembly, and the carrying body is used to carry at least one container of the valve opening device; A guide shaft is connected below the bearing body, and the guide shaft is movably arranged through the base assembly.

8. The valve opening assembly according to any one of claims 1 to 5, characterized in that: The press-open component has a plurality of first air permeable grooves arranged at intervals and a plurality of second air permeable grooves arranged at intervals on a side facing the corresponding container, and the first air permeable grooves and the second air permeable grooves are arranged crosswise.

9. The valve opening assembly according to any one of claims 1 to 5, characterized in that: The press-open component is mounted on the mounting seat to limit the lowest position of the press-open component; and / or the valve opening assembly also includes a roller mounted below the mounting seat.

10. A drying device, characterized in that: include: The valve opening assembly according to any one of claims 1 to 9; The heating furnace has a working chamber for heating, and the valve opening assembly can be located in the working chamber.

11. The drying device according to claim 10, characterized in that: The heating furnace also has a negative pressure interface communicated with the working chamber.

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